Improvement in elevated railways



J. M. HANNAHS. Elevated fiailway.

Patented May11,1875.,

THE GRAPHIC CO.PHOTO:L|TH.39&4I PARK PLACLILY.

JAMES M. HANNAHS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF HIS RIGHTTO LOUIS WAHL AND CHRISTIAN WAHL, OF SAME PLACE.

IMPROVEMENT IN ELEVATED RAILWAVS.

Specification forming part of Letters Patent No. 163,189, dated May 11,1875 application filed December 28, 1874.

CASE B.

To all whom it may concern:

Be it known that I, JAMES M. HANNAHS, of the city of Chicago, in thecounty of Cook and State of Illinois, have invented a new and usefulImprovement in Elevated Railways, of which the following is a fulldescription, reference being had to the accompanying drawings, in whichFigure 1 is a side elevation; Fig. 2, a vertical section on line y ofFig. 1; Figs. 3, 4, and 5, details, Fig. 4 being a section on line aofFig. 3.

Elevated railways having girders upon their sides for the purpose ofsupporting the track, and serving, also, as guards to prevent accidents,have been used, and bars or ties, on which the rails are supportedbeneath the girders.

This invention consists in so constructing the railway that thecross-bars or ties'pass through openings in the web of the girders andrest on the flanges of the lower angleirons or chords, instead of beingplaced below them, or rest on flanges within the girders.

In the drawings, A represents one of the posts; B, a crossbar upon theposts, upon which the railway is supported. 0 O are girders, placedalong the sides of the track. 1) are cross bars or ties, on which areplaced longitudinal bars I), to which the rails c are secured. Thesecross-bars D pass through openings or holes cin the web of the girdersO. 7

They have, near each end, a recess, f, on their under sides, to passover the strengthening parts g. The ties rest upon the flanges h of thelower angleirons.

By this construction I am enabled to use wooden ties instead of tiesmade of iron, though iron ties might be used.

After the ties have been placed in position I rivet a piece of metal, a,upon the girder 0, just above each tie, so as to hold them in place, andalso bolt each end of each tie to the flange h of the angle-irons.

It is evident that, in place of making openings in the Web of thegirders to receive the ties, they may be made of such length as to fitbetween the girders, and rest on the inner flange h, which, ifnecessary, can he strengthened.

What I claim as new is as follows:

1. The girder 0, having openings 0 to receive the ties D, substantiallyas and for the purposes specified.-

2. In an elevated railway, the girders O, in combination with the tiesD, said ties being. supported upon, and placed above, the lowerangle-irons or chords, substantially as specified.

JAMES M. HANNAHS.

Wituesses:

E. A. WEsT, 0. W. Bonn.

